Design and implementation of spatial-temporal spectrum sensing in cooperative cognitive radio sensor network

Pei Hua Lee, Pei Yun Tsai

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations


A distributed energy detection scheme that exploits the spatial-temporal correlation is proposed for heterogeneous cognitive radio (CR) sensor network. We first use the weighted centroid algorithm to localize the position of the PU. Then according to the localization result, selective measurement combining for weighted average consensus is adopted to fuse the energy detection outputs of only homogeneous sensor nodes. From the simulation results, the better receiver operating characteristics of the whole network can be obtained than the conventional cooperative sensing and unconstrained weighted average consensus algorithms. To accomplish a low-complexity implementation, folding and hardware sharing techniques are employed. To support wide signal dynamic range, block floating-point representation is used and thus the design has tiny implementation loss.

Original languageEnglish
Title of host publicationISOCC 2015 - International SoC Design Conference
Subtitle of host publicationSoC for Internet of Everything (IoE)
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages2
ISBN (Electronic)9781467393089
StatePublished - 8 Feb 2016
Event12th International SoC Design Conference, ISOCC 2015 - Gyeongju, Korea, Republic of
Duration: 2 Nov 20155 Nov 2015

Publication series

NameISOCC 2015 - International SoC Design Conference: SoC for Internet of Everything (IoE)


Conference12th International SoC Design Conference, ISOCC 2015
Country/TerritoryKorea, Republic of


  • Cognitive radio (CR)
  • sensor network
  • spatial-temporal opportunity detection
  • spectrum sensing


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